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No. 7I5, 5|9. Patentd Dec. 9. |902.

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(Application led July 26, 1902.)V

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ROLLIN C. STEESE AND EDWARD L. FORD, OFVYOUNGSTOWN, OHIO.

BLAST-FU RNAC E.

SPECIFICATION forming part of Letters Patent N o. 715,519, dated December 9, 1902.

Application led July 26, 1902. Serial No. 117,122. (No model.)

T0 all whom, t may concern:

Be it known that we, ROLLIN C. STEESE and EDWARD L. FORD, citizens of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented or discovered certain new and useful Improvements in Blast-Furnaces, of which improvements the following is a specification.

The invention described herein relates to certain improvements in blast-furnace appliances, and has for-its object the provision of an efficient washer for the gases from the furnace and also of automatically-acting relief mechanism, whereby gases may be allowed a free escape in case of explosions or slips and the sealing is effected immediately on the restoration of normal pressures in the furnace and down-comer pipes.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is an elevation of a blast-furnace having our improvement applied thereto. Fig. 2 is a view, partly in section and partly in elevation, o'f our improved washer and relief apparatus. Fig. 3 is a top plan view of the same. Fig. 4 is a sectional elevation on a plane indicated by the line IV IV, Fig. 2. Fig. 5 is a sectional elevation illustrating a modification of our improvement. Fig. 6 is a plan view of the same, and Fig. 7 is a sectional detail view.

In the practice of the invention we provide for causing the gases as they owfrom the furnace to the hot stovesV or other places of use to impinge against a liquid at a series of points, the gases being baffled intermediate of the points or places of impingement on the liquid, whereby the rate of flow of the gases is checked and the gases themselves are agimately normal pressure has been restored.

In the practice of our invention the gases from the furnace flow from the down-comer pipe 1 through a series of passages, each passage conductingthe gases into a pocket or cleaning-chamber, from which the next passage conducts the gases to the next pocket or chamber. The wall or side of each pocket or chamber opposite the discharging-passage is formed by a liquid, against which the gases impinge and by which the gases are diverted and their direction of flow changed. The pockets or chambers are so constructed that cleansing-` liquid-e. g., water-acts as a seal and-can be displaced by an excess of pressure, permitting the free escape of gases.

A convenient construction for the practice of our invention is shown in Figs. 1, 2, and 3, wherein the gas-passages are formed by a series of pipes 1, 2, and 3, &c., the pipe 1 being a part of or connected to the down-comer pipe of the furnace and the pipe 3, or last pipe of the series, being connected to the hot stoves or other means for using the gases. The rear or `outlet end of each pipe is made sufficiently smaller than the fron-t or inlet end of the next pipe to permit of the insertion of the rear end of each pipe into the front end of the next, as clearly shown. The two pipes where they pass one into the other are secured together by means of rivets or other suitable means. As shown in Figs. 1 and 3, the large end of each pipe extends down beyond the small end of the preceding pipe, entirely inclosing and forming a pocket 4 around the small end of the latter. of the pipes extend down below the surface of water contained in the tank 5, which is made sufficiently larger in the plane of the large ends of the pipes and above such plane than such end as to permit a free iiow of water up between the pipes and the side walls of the tank in case the pressure in the pipes increases abnormally. The large ends of the pipes are supported in proper position in the tank by means of bars 6, arranged transversely of the tank. In order to prevent a lifting of the pipes in case of explosions or slips inthe furnace, it is preferred to tie the pipes to the bars 6, and this can be done conveniently by means of straps 7.

Water flows into the tank through the pipe 8, connected to any suitable source of supply, and its escape therefrom is controlled by any suitable means whereby any desired level of water may be maintained in the tank. A con- (Shown in Figs. 1 and 3.)l

The large ends venient means to that end consists in forming a pocket around the outlet-pipe 9, having its walls, except a movable portion 10, extending to a height at least equal to the highest level desirable in the tank. The portion 10 is arranged in guides and can be removed and another higher' or lower section substituted.

To facilitate the removal from the tank of any foreign matter passing from the furnace with the gases, the sides of the tank incline inwardly, forming a gutter along the lowest portion of the tank, as shown in Fig. 3, and openings are formed along the gutter at suitable intervals for the escape of material collected in the tank. The openings are normally closed by any suitable means, such as the disks 11, held against suitable seats by weighted levers 12.

The tank is provided with a series of supporting-brackets 13, adapted to rest upon supporting-piers 14. Between the lines of piers is formed a sewer 15, inclined from the end below the outlet of the tank, so that the overflow-water from the tank will maintain a constant stream along the sewer and wash away the materials deposited therein when the tank is cleaned by lowering the disks 11.

In lieu of one continuous tank, as shown in Figs. l and 2, the large ends of the pipes 2 3, the., may be arranged in a series of independent tanks or basins 16, as shown in Figs. 4 and 5. These tanks may be connected in series with the Water-supply, or the Water-supply pipe 8 may be provided with valved branches 17, so that each basin may be independently supplied.

It will be observed that the gases are discharged directly against the surface of the water and are deflected outwardly beyond the walls of the inlet-orilice. As the solid particles carried by the gases change their direction of movement less easily than the gases, they will enter the water and be separated from the gases.

By raising the level of the Water above the edges of the large ends of the pipes the latter may be sealed'as against any desired pressure of gases; but in case of sudden increase of pressure in the pipes due to explosions or slips in the furnace the Water will be displaced, allowing a free escape of gases. As soon as normal pressure is restored the water will resume its normal level automatically, resealing the pipes. If water has been forced out of the tank by the increased pressure, the water flowing in through pipe 8 will soon supply the deciency to form a seal.

We claim herein as our invention- 1. A blast-furnace plant, having in combination, a series of pockets, aseries of passages extending from one pocket to the next, said pockets having water-walls transverse of the line of discharge of gases into the pockets and a gas-pipe connected to the first pocket of the series, substantially as set forth.

2. A blast-furnace plant, having in combination, a series of water-sealed pockets, a series of passages extending from one pocket to the next, the passages being arranged to discharge the gases against the water forming the seal, and a gas-pipe connected to the first pocket of the series, substantially as set forth.

3. A blast-furnace plant, having in combination, a series of pockets containing water, a series of pipes extending to and from said pockets, the outlet end of one pipe being arranged Within the inlet end of the next pipe, and a gas-pipe having its outlet end projecting into the first pipe of the series, substantially as set forth.

4. A blast-furnace plant, having in combination, a series of pipes having their inlet ends water-sealed and their outlet ends arranged to discharge the gases into the next outlet arranged within the inlet end of the first pipe of the series, substantially as set forth.

6. In a blast-furnace plant, the combi nation of atank havinginwardly-inclined sides, aseries of pipes having their inlet ends submerged in water contained in said tank and their discharge ends projecting in the next pipe of the series at p oints adjacent to their inlet ends, a gas=pipe having its outlet arranged within the inlet end of the irst pipe of the series and a series of valved discharge-openu ings arranged along the under side of the tank, substantially as set forth.

'7. In a blast-furnace plant, the combination of a tank having an overflow, a series of valved openings arranged along the under side of the tank, a series of pipes having their inlet ends submerged in Water contained in the tank and their opposite ends projecting into the next adjacent pipes of the series, a pipe extending from the blast-furnace and having its discharge end projecting into the first pipe of the series, and a gutter or sewer arranged under the tank and inclined, the discharge or overflow from the tank being so arranged that the material discharged into the gutter from the tank will be removed by the overflow-water, substantially as set forth.

8. The combination of an open-topped tank, a series of pipes having one end submerged in water contained in the tank and their opposite ends projecting into the next pipe of the series and a gas-pipe projecting into the first pipe of the series, substantially as set forth.

9. The combination O a Blast-furnace, a In testimony whereof We have hereunto set gas-pipe and a water-sealed pressure-relief our hands.

mechanism adapted to permit of an escape of ROLLIN C. STEESE. gases on an increase of pressure in the fur- EDWARD L. FORD. nace and the automatic restoration of the seal Witnesses:

on a reduction of pressure to or approximately W. R. MERRICK,

to normal, substantially as set forth. D. G. KING. 

